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Accelerator mass spectrometry of $$^{90}$$Sr in environmental samples collected in the vicinity of a nuclear power plant

Honda, Maki   ; Martschini, M.*; Steier, P.*; Golser, R.*; Kanivets, V.*; Rahman, I. M. M.*; Yamasaki, Shinya*; Sakaguchi, Aya*

A new analytical method for $$^{90}$$Sr utilizing accelerator mass spectrometry (AMS) achieved better detection limits (1/10 of $$<$$0.1 mBq) than conventional $$beta$$-ray detection methods. In order to demonstrate the applicability of the AMS method to environmental samples of various properties, the present study analyzed impurity-rich water samples collected from the cooling water supply ponds of the Chornobyl NPP. The $$^{90}$$Sr/$$^{88}$$Sr atomic ratio of the water samples (evaluated by $$beta$$-ray detection and ICP-MS), the expected detection limit, and the analysis method are reported in this meeting. Furthermore, the adaptability of the AMS method for $$^{90}$$Sr concentration (Bq/L) in water samples will be demonstrated by comparing the AMS method with the $$beta$$-ray detection method.

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